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arXiv 1603.07571gr-qc
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四维引力场的洛伦兹规范和库仑规范

Lorentz gauge and Coulomb gauge for tetrad field of gravity

Tao Zhou

摘要:

在广义相对论中,惯性系只能在时空的一个小区域中建立,而局部惯性系在数学上是由引力中的四分场来表示的。由于在局部惯性系中进行洛伦兹变换的自由,四元组场并不是唯一的,并且在每个时空点存在选择局部惯性系的自由。定域洛伦兹变换被称为四量子场的非Abel规范变换,为了固定规范自由度,对应于电动力学中的Lorentz规范$\partial^μ\mathcal{A}_μ=0$和库仑规范$\partial^i\mathcal{A}_i=0$,本文提出了四量子场的Lorentz规范和库仑规范.此外,还讨论了四量子场的洛伦兹规范和库仑规范的性质,这些性质与电磁场的性质相似。

英文摘要:

In general relativity, an inertial frame can only be established in a small region of spacetime, and locally inertial frames are mathematically represented by a tetrad field in gravity. The tetrad field is not unique due to the freedom to perform Lorentz transformations in locally inertial frames, and there exists freedom to choose the locally inertial frame at each spacetime point. The local Lorentz transformations are known as non-Abelian gauge transformations for the tetrad field, and to fix the gauge freedom, corresponding to the Lorentz gauge $\partial^μ\mathcal{A}_μ=0$ and Coulomb gauge $\partial^i\mathcal{A}_i=0$ in electrodynamics, the Lorentz gauge and Coulomb gauge for the tetrad field are proposed in the present work. Moreover, properties of the Lorentz gauge and Coulomb gauge for tetrad field are discussed, which show the similarities to those in electromagnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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